Battery charger



FIG. 1 is a front perspective view of a battery charger showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front plan view thereof;

FIG. 4 is a rear plan view thereof;

FIG. 5 is a top elevational view thereof;

FIG. 6 is a bottom elevational view thereof;

FIG. 7 is a first side elevational view thereof; and,

FIG. 8 is a second side elevational view thereof.

The broken lines shown in FIGS. 1, 2, 3, 4, 5, 7, and 8 are included for the purpose of illustrating environmental elements only and form no part of the claimed invention. 

The ornamental design for a battery charger, as shown and described. 